| Meckel's ganglion | A small parasympathetic ganglion in the upper part of the pterygopalatine fossa whose postsynaptic fibres supply the lacrimal, nasal, palatine and pharyngeal glands. Synonym: ganglion pterygopalatinum, Meckel's ganglion, nasal ganglion, sphenopalatine ganglion. (05 Mar 2000) |
|---|---|
| Meckel's ligament | The portion of the anterior ligament of the malleus that extends from the base of the anterior process through the petrotympanic fissure, to attach to the spine of the sphenoid. See: anterior ligament of malleus. Synonym: Meckel's ligament. (05 Mar 2000) |
| Meckel's plane | A craniometric plane cutting the alveolar and the auricular points. (05 Mar 2000) |
| Meckel's space | The cleft in the meningeal layer of dura of the middle cranial fossa near the tip of the petrous part of the temporal bone; it encloses the roots of the trigeminal nerve and the trigeminal ganglion. Synonym: cavum trigeminale, Meckel's cavity, Meckel's space, trigeminal cavity. (05 Mar 2000) |
| Meckel syndrome | A malformation syndrome, lethal in the perinatal period, and characterised by intrauterine growth retardation, sloping forehead, occipital exencephalocele, ocular anomalies, cleft palate, polydactyly, polycystic kidney, and other malformations; autosomal recessive inheritance. Synonym: Meckel syndrome, Meckel-Gruber syndrome. (05 Mar 2000) |